WINNER's Song Min Ho struggled on 'Master Key' and said that the show is more difficult than 'Show Me The Money'.

On the November 4 episode of 'Master Key', new players were introduced and accordingly, new rules were set as well. For this particular episode, the players were required to identify the holders who held an 'angel master key' and a 'devil master key'.

Throughout the entire episode, Song Min Ho was suspected of holding the 'devil master key' which resulted in the artist approaching each player separately to convince them that he is the angel. After struggling and talking to several cast members of the show, he walked away shaking his head while saying, "This is actually more difficult than 'Show Me The Money'."